AMx ARM® Cortex™-A8 Microprocessors. (MPUs). Technical Reference Manual. Literature Number: SPRUH73C. October –Revised. AMx ARM® Cortex™-A8 Microprocessors. (MPUs). Technical Reference Manual. Literature Number: SPRUH73J. October –Revised December . Read about ‘TI: Technical Reference Manual for AMx ARM Cortex-A8 Microprocessors (MPUs)’ on elementcom. TI: Technical Reference.
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OSD335x Reset Circuitry
From Texas Instruments Wiki. This is a recommended reading for anyone trying to develop or use other Ethernet based protocols provided in the SDK. Navigation menu Personal tools Log in Request account. This is specific to the PRU subsystem although access is possible from Host albeit slowly.
Pacing is enabled in the driver using the variable intrPacingMode. The board contains a serial EEPROM with the board specific data which allows the processor to automatically detect which board is tgm and the version of that board.
It also supports an SD card socket. The driver is written in a manner such that there is very little dependency on the Operating System.
Change the port state to appropriate value. It is not intended for use in end products.
The time availability check for cyclic packets means to basically check whether the acyclic packet can be transmitted such that its transmission does not overlap the next cyclic trigger, considering the size of the acyclic packet. Developer needs to know that firmware copies the packet data here after receiving them and this is where the driver writes the packet data meant for transmission using the firmware.
So in total there are 15 queues 12 queues in EMAC4 receive queues for Host and 4 transmit queues for each of the two physical ports. The Pin assignment is as given below. Views Read View source View history. It is not intended as a generic development platform as some of the features and interfaces supplied by the AMx a335x not accessible from the ICE board.
Where icssEmacHandle is the main driver handle and processProtocolFrames is the callback function whose outline is given below. Anything lower than this configured value goes to the callback function.
The TRM’s can be found here. This helps the Host to queue the cyclic packet well before trigger time and avoid any unnecessary trk or any other erroneous situations as mentioned previously. Current SDK release 2. The Serialized output from the serializer is fed to the SPI0 port of the processor.
To overcome this problem, a reset supervisor circuit can be used. Shown below are the members of Host Statistics.
A lot of the memory is available for protocol or application specific usage, for more details refer to the memory map. The two PRU’s are responsible for reception of packets while Host runs higher level tasks. The members of PRU statistics are listed in the memory map.
Based on the priority of the packet which is decided by the queue number refer to discussion on QoS and queues driver decides to either forward it am33x5 NDK, done by icssEmacHwIntRx or give it to the callback function. This layer is implemented in the driver.
This flash is connected to the SPI0 port of the processor.
ICSS EMAC LLD developers guide – Texas Instruments Wiki
Cold Reset and Warm Reset. Queue 0 high priority queue is reserved as the real-time queue. In addition to these there is 1 collision queue each for Host and 2 ports which can hold one packet irrespective of packet size.
The Storm prevention implementation is similar in both PRU’s but implemented separately, so it’s possible to turn it off selectively for each port.
This signal is applied until the power supplies are stable am35x the device can begin normal operation. HW Port represents the physical port. Technical Reference Manual for an SoC. For switch this is the Rx interrupt for both ports. On the driver this queue number then translates to the priority value and is used to decide how to process the packet. For technical support please post your questions at http: